Packaging of glass



April 23, 1935. w, F. B'ROWN 1,998,486

PACKAGING OF GLASS Filed May 9, 1932 3 nventor Y Cittorneg Q/ILBUP E BROWN.

Patented Apr. 23, 1935 v 1 s PATENT" OFFICE PACKAGING F GLASS Wilbur F. Brown, Charleston, W. Va., assignor to Libbey-Owens-Ford Glass Company, Toledo, Ohio, a corporation of Ohio Application May 9, 1932, Serial No. 610,218

. 6 Claims. (01. 206-62) v The present invention relates broadly to the which the ends of the envelope may be folded and art of packaging, and more particularly to the d. I I l packaging of glass articles and especially glass Briefly Stated, in accordance With'the present sheets. invention, a series ors tack ofglasssheets 5 are c 5 Heretofore, two general methods commonly first packed W th alsealed' u p f 5 termed-paper packing nd hay packing h velope or wrapping 6 completely enveloping the been followed in the packaging of glass heet same, with the individual sheets of glass within Howevenwhen the glass sheets are packed in said env l pe or'w app e being mamteined accordance with either method, the individual p ed fIOm oneanother by eets of thoroug y 10 Sheets of glass are ordinarily maintained spaced dried pap r T." After the-glass sheets have been 10 from one another by separate sheets of paper. P p y packed wi ve 9 a fl s One of the greatest sources of trouble experienvelope s a d, the stack of she ts ist peeked enced in the packaging of the glass Sheets h within the wooden shipping container- Signs been the, tendency of the glass to become stained S there may be i d Over each 11 of the or tarnished by the paper in contact therewith v p hi l Pi Container P 15 during storage, this stainingbeing primarily due ive corne cap 9 ab y formed o c u ate to the sweating of the glass sheets. Stained glass P per. is well known to experienced handlers of fiat tiS o course o be eXpress1y understood t glass'and also that glass which has become stained this inventionisnot intended to be limited to 20 Cannot becleaned byany of theordinary methods y sp cifi d o pa n the m ur p f; 20 of cleaning. Consequently, glass with even light nvelope cont theistack" of glass Sheets stain loses most of its market value and badly within the shipping container- 8. Onthe other stained glass is not acceptable to the trade. a the invention concernsprimarily t pa An important object of this invention,thereing of the glass within theenvelope 6 and the 2 fore, resides in the provision of a new and im- Spacing o the iv du l Sheets th r proved method of packing glass sheets wherein one another. all danger ,of the glass sweating and becoming AS pointed out above, considerable difficulty stained ortarnished during storage will be enhas been encountered'in the stainingortarnish tirely eliminated. ing' of the glass sheets duringstorage and which Another important object of the invention is resu ts I X' i Y fr m=. w tins Lth a 30 the provision of such a method wherein a stack l-Iowever, by; packing the glass in c n of glass sheets are packed within a sealed moiswith my improved method all danger ofv the ture proof envelope or wrapping completely englass sweating during storage will be obviated, veloping the same, and further wherein the and consequently, the staining of the glass inindividual lights of glass within the envelope or cident to such sweating will be eliminated. This 35 wrapping are maintained spaced from one an-' is accomplished by packing the glass sheets first other by sheets of paper which have been thor- Within the moisture proof envelope 6 before oughly dried and are therefore free of all packing them in the wooden shipping container moisture. 8. The envelope 6 is adapted to be formed of 40, Other objects and advantages of the inventio thoroughly water proofed and moisture resistant 40 will become more apparent during the course of paper which is entirely free from alkaline. More the following description when taken in connecspecifically, I propose to use a thoroughly water tion with the accompanying drawing. proofed non-alkaline kraft paper.

In the drawing forming a part of this ap- The moisture proof envelope 6 may be made in 5 plication and wherein like numerals are emany desired manner just so long as it completely ployed to designate like parts throughout the envelopes and seals in the glass, That is to same, say, the envelope may be purchased from'the Fig. 1 is a perspective view illustrating one paper manufacturers open at both ends, or closed method of packing glass in accordance with the at one end and open at the other so that it can present invention, be slipped over the stack of sheets, after which 0 Fig. 2 is a perspective view of the moisture the open end can be folded and sealed. On the proof envelope removed from the wooden shipother hand, if desired, the envelope can be ping container and showing one end of the enformed by simply wrapping the stack of sheets velope open, and with a sheet of water proofed kraft paper of a Fig. 3 is a similar view showing one way in width greater than the length of the sheets as 1 UNITED :STATE opposite ends thereof will overlap one another as indicated at ill, with the said overlapping ends being glued together as at l I. The opposite ends of the envelope or wrapping can then be folded in any well known manner, such as shown in Figs. 1 and 3, and the folds or flaps I2 glued down with a suitable glue I3.

I also intend that the sheets of paper 1 which are used to maintain the individual sheets of glass 5 spaced from one another shall be treated before use in such a manner that they are thoroughly air dry. It have found that under certain atmospheric conditions, paper heretofore used in the packaging of glass sheets to separate each light of glass may contain enough moisture to cause some staining of the glass after the glass has been stored for some length of time. Therefore, the sheets of spacing paper 1 are adapted to be thoroughly dried before using.

It is also desirable that the glue used in the making of the envelope and in sealing the ends thereof be of such a nature that it will have no adverse effect upon the glass. For instance, a glue including sodium silicate should not be used for the reason that there is a tendency for this type of glue to stain the glass. Myinvestigations have shown that while a non-alkaline or vegetable glue can be successfully used without adversely affecting the glass, the best and most practical glues for this purpose are these containing borax. I therefore may useeither a nonalkaline glue or a glue the alkalinity of which comes only from borax. That is to say, the glue should contain no trace of sodium silicate. As an example of a permissible alkaline glue, the following may be used:

Lbs. Dextrine 160 Borax 25 Water 300 Preservative as desired, for example, lb.

sodium benzoate or lb. phenol.

I have found that if the glass sheets are packed in a moisture proof envelope of water proofed kraft paper, and also that if the paper used to separate the individual lights of glass is thoroughly dried before use, the glass cannot'possibly sweat when packed in the wooden shipping container, even .under the most severe adverse conditions. Consequently, the glass so packed will never become stained in storage.

shown in Fig. 2, and of such a length that the I claim:

1. In the art of'packaging glass sheets, the method consisting in first packing a plurality of sheets in a moisture proof envelope, placing the pack of sheets within a Wooden shipping container, and in fitting over each corner of the pack of sheets within the said container a protective corner cap of corrugated paper.

2. In the art of packaging glass sheets, the method consisting in first packing a plurality of sheets in a moisture proof envelope, maintaining the individual lights of glass within the envelope spaced from one another by sheets of thoroughly air dry paper, placing the pack of sheets Within a wooden shipping container, and in fitting over each corner of the pack of sheets within the said container a protective corner cap of corrugated paper.

3. In the art of packaging glass sheets, the method consisting in first completely enveloping a plurality of sheets with a water-proofed paper, placing the same in a shipping container, and in fitting over each corner of the pack of sheets within the said container a protective cap of corrugated paper.

4. In the art of packaging glass sheets, the method consisting in first completely enveloping the sheets with a non-alkaline water-proofed, moisture resistant paper, placing the same in a shipping container, and in fitting over each corner of the pack of sheets within the said container a protective cap of corrugated paper.

5. In the art of packaging glass sheets, the method consisting in first completely enveloping a plurality of sheets with a water-proofed paper, maintaining the individual lights of glass spaced from one another by sheets of thoroughly air-dry paper, placing the same in a shipping container, and infitting over each corner of the pack of sheets within the said container a protective cap of corrrugated paper.

6. In the art of packaging glass sheets, the method consisting in first completely enveloping the sheets with a non-alkaline water-proofed, moisture resistant paper, maintaining the indi vidual lights of glass spaced from one another by sheets of thoroughly air-dry paper, placing the same in a shipping container, and in fitting over each corner of the pack of sheets within the said container a protective cap of corrugated paper.

WILBUR F. BROWN. 

